MPH to KTS

[BoDEAN]

Whats the conversion off hand to convert?
Our airplanes have MPH on the AS gauge, and our checklists have kts
(ie Best Glide, 65kts)

[Peter R.]

BoDEAN wrote:

> Whats the conversion off hand to convert?
> Our airplanes have MPH on the AS gauge, and our checklists have kts
> (ie Best Glide, 65kts)

Multiply knots by 1.15 (15% more) to get speed in MPH.

Or, you can do simple math: move the decimal over one to the left, add
half more, then add amount to knots.

In other words, 65 knots - move the decimal over equals 6.5, or just 7.

Half of 7 is 3.5, or just 3 (since I rounded up before, round down
now). 7 plus 3 equals 10.

10 plus 65 equals 75. <- that's your approximate speed in MPH


Or, if you have your E6-B, look it up there. :)

--
Peter







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[John E. Carty]

KTS = MPH * 0.87
MPH = KTS * 1.15
:-)

"BoDEAN" > wrote in message
...
> Whats the conversion off hand to convert?
> Our airplanes have MPH on the AS gauge, and our checklists have kts
> (ie Best Glide, 65kts)
>
>

[Peter R.]

I wrote:

> Or, if you have your E6-B, look it up there. :)

Whoops, I just pulled out my E6-B and noticed it doesn't have the
conversion already printed. No bother, do this:

On the E6-B, set up a ratio where the inside scale is knots and the
outside scale is MPH. To do this, move the wheel so the inside 60 is
aligned with the outside 69.

Now, any speed in knots inside will align with its MPH equivalent on the
outside.

--
Peter






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[John T]

"BoDEAN" > wrote in message

>
> Our airplanes have MPH on the AS gauge, and our checklists have kts

Are you re-writing your checklists? I rarely pass up a chance to reduce
cockpit math. :)

--
John T
http://tknowlogy.com/TknoFlyer
http://www.pocketgear.com/products_search.asp?developerid=4415
____________________

[Tony Cox]

"BoDEAN" > wrote in message
...
> Whats the conversion off hand to convert?
> Our airplanes have MPH on the AS gauge, and our checklists have kts
> (ie Best Glide, 65kts)
>

Sure. It's easy.

First take the square of the speed (in knots).
Then add 56 times the original speed, add 784,
and then add another 32% to that total. Take the
square root, subtract 32 and there's your answer!

[Peter Duniho]

"Tony Cox" > wrote in message
k.net...
> Sure. It's easy. [...]

It IS silly that anyone old enough to be a pilot doesn't know how to convert
from MPH to knots. But your answer was just plain *mean*.

Not that I didn't enjoy it. :)

Pete

[Dave]

> Whats the conversion off hand to convert?
> Our airplanes have MPH on the AS gauge, and our checklists have kts
> (ie Best Glide, 65kts)
>

Calculate the waiter's tip on your KTS to get MPH. Always remember for a
given speed, the MPH number is more that the KTS because statues are taller
that knots.

[Big John]

BoDean

If you fly by the Mach meter you don't have to convert.

Big John


On Thu, 12 Feb 2004 22:37:59 -0500, BoDEAN >
wrote:

>Whats the conversion off hand to convert?
>Our airplanes have MPH on the AS gauge, and our checklists have kts
>(ie Best Glide, 65kts)
>

[Peter R.]

Big John ) wrote:

> If you fly by the Mach meter you don't have to convert.

Does a Mach meter display speeds that low? :)

--
Peter R.















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[Doug Carter]

On 2004-02-13, Big John > wrote:
> BoDean
>
> If you fly by the Mach meter you don't have to convert.

What's your stall speed in Mach?

[Nathan D. Olmscheid]

One good place to check out formulas and such is google.

Example: type in google search bar:

1 mph in knots

it will come back with 1 mph = 0.868976242 knots

You can type any number in there. Googles built in calculator can come
in handy. You cooks out there?? You can type in things like 5 cups in
tablespoons.

Almost anything you can think of to convert google calculator will do
it. (anyone know muchb about rods? 1 mile is equal to 320 rods) You can
even do such things as 5+5+5+6+10/4-3 etc etc and it will figure it out
for you.

Take Care
Nathan



BoDEAN > wrote in
:

> Whats the conversion off hand to convert?
> Our airplanes have MPH on the AS gauge, and our checklists have kts
> (ie Best Glide, 65kts)
>
>

[Peter R.]

Nathan D. Olmscheid wrote:

> One good place to check out formulas and such is google.

That's great. Now all he needs is his laptop displaying Google while he
is flying! ;-)

Seriously now, thanks for the information. I didn't know Google did
that.

--
Peter







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[Tony Cox]

"Nathan D. Olmscheid" > wrote in message
. 159.7...
>
> Almost anything you can think of to convert google calculator will do
> it. (anyone know muchb about rods? 1 mile is equal to 320 rods) You can
> even do such things as 5+5+5+6+10/4-3 etc etc and it will figure it out
> for you.
>

Well bugger me! It even knows about slugs.
Fancy that!

[G.R. Patterson III]

Big John wrote:
>
> If you fly by the Mach meter you don't have to convert.

And if you fly mph, you don't have to convert either. Doesn't help when some
flight planning program you're trying to use insists on you entering everything
in knots.

George Patterson
A diplomat is a person who can tell you to go to hell in such a way that
you look forward to the trip.

[Charlie Wendell]

A good approximation is ... divide the number by 7, then ...
from kts to mph add what you get to get mph, or
from mph to kts, subtract what you get to get kts.

ex .. 70 kts is 70 plus 10 or 80 mph.

or 70 mph is 70 minus 10 or 60 kts.

It's close, within a knot or two ( or mph or 2)
not exact ..but ..close nuf for government work !
--
Cheers, Charlie

[carlos]

Remember the Mars probe that got lost because half of the engineering team
worked in metric units while the other worked in feet???

"G.R. Patterson III" > wrote in message
...
>
>
> Big John wrote:
> >
> > If you fly by the Mach meter you don't have to convert.
>
> And if you fly mph, you don't have to convert either. Doesn't help when
some
> flight planning program you're trying to use insists on you entering
everything
> in knots.
>
> George Patterson
> A diplomat is a person who can tell you to go to hell in such a way
that
> you look forward to the trip.

[Mark Mallory]

Nathan D. Olmscheid wrote:
> Almost anything you can think of to convert google calculator will do
> it. (anyone know muchb about rods? 1 mile is equal to 320 rods) You can
> even do such things as 5+5+5+6+10/4-3 etc etc and it will figure it out
> for you.

I've never really felt comfortable with knots, so I had Google convert them to
something more intuitive: "1 knot in furlongs per fortnight".

(Answer: 3093.29516)

They make much more sense now ;>

[Mark Mallory]

Big John wrote:
>
> If you fly by the Mach meter you don't have to convert.

Actually, you do. If you're going from Mach to TAS, you need to correct for
temperature. And if you need IAS (for determining approach speeds, ect) you
need further corrections for density (EAS), compressibility (CAS) and instrument
error (IAS).

[Mark Mallory]

BoDEAN wrote:
> Whats the conversion off hand to convert?

The conversion factor is 57,875/50,292 (exactly),
or 1 kt = 1.150779448 mph (approximately).

[Robert L. Bass]

See http://www.onlineconversion.com/speed_all.htm
That site has many conversions too. Now I just have to figure out how to get
online while flying. ;-)

Normally my airspeed indicator and GPS are in MPH. I do the conversion, if
necessary, on the ground while planning the flight.

"Nathan D. Olmscheid" > wrote in message
. 159.7...
> One good place to check out formulas and such is google.
>
> Example: type in google search bar:
>
> 1 mph in knots
>
> it will come back with 1 mph = 0.868976242 knots

[Bushy]

> > If you fly by the Mach meter you don't have to convert.
>
> What's your stall speed in Mach?

0.025 in my storch ;<)

Hope this helps,
Peter

[Michelle P]

if your airplane is in MPH and your checklist is in knots then you have
the wrong checklist for your aircraft.
Michelle

BoDEAN wrote:

>Whats the conversion off hand to convert?
>Our airplanes have MPH on the AS gauge, and our checklists have kts
>(ie Best Glide, 65kts)
>
>
>
>

--

Michelle P ATP-ASEL, CP-AMEL, and AMT-A&P

"Elisabeth" a Maule M-7-235B (no two are alike)

Volunteer Pilot, Angel Flight Mid-Atlantic

Volunteer Builder, Habitat for Humanity

[Nathan D. Olmscheid]

Yeah...not for use when in the airplane! hehe


Peter R. > wrote in
:

> Nathan D. Olmscheid wrote:
>
>> One good place to check out formulas and such is google.
>
> That's great. Now all he needs is his laptop displaying Google while he
> is flying! ;-)
>
> Seriously now, thanks for the information. I didn't know Google did
> that.
>

[Paul Folbrecht]

Where does the counting on your toes part come in?

Tony Cox wrote:
> First take the square of the speed (in knots).
> Then add 56 times the original speed, add 784,
> and then add another 32% to that total. Take the
> square root, subtract 32 and there's your answer!
>
>